This character looks like 人 alot.
That website says that it's the character of roots descending into earth
I search for root in mgdb and can't find it.
I search for 入 and I found this https://www.mdbg.net/chinese/dictionary?page=worddict&wdrst=0&wdqtm=0&wdqcham=1&wdqt=ru%0D%0A
What's the difference between 入and人? They look almost the same to me. When inside other pics how do I know which one is which?